12821299 has 2 divisors, whose sum is σ = 12821300. Its totient is φ = 12821298.

The previous prime is 12821293. The next prime is 12821311. The reversal of 12821299 is 99212821.

12821299 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12821299 is a prime.

It is not a weakly prime, because it can be changed into another prime (12821293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6410649 + 6410650.

It is an arithmetic number, because the mean of its divisors is an integer number (6410650).

Almost surely, 2^12821299 is an apocalyptic number.

12821299 is a deficient number, since it is larger than the sum of its proper divisors (1).

12821299 is an equidigital number, since it uses as much as digits as its factorization.

12821299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 12821299 is about 3580.6841525049. The cubic root of 12821299 is about 234.0510943531.

It can be divided in two parts, 128 and 21299, that multiplied together give a palindrome (2726272).

The spelling of 12821299 in words is "twelve million, eight hundred twenty-one thousand, two hundred ninety-nine".